Add refresh action to more git commit toolview ctx menus
requested to merge verner/kdevelop:fix/add-refresh-repo-action-to-all-gitcommit-ctx-menus into release/21.12
This commit was already merged into master via !279 (merged) as d660f70c, but I think its safe and would be nice to also have in release/21.12. This mege request is just a rebase of the commit onto release/21.12.
Before, when an element in one of the categories (staged/unstaged/...) was selected, its context menu didn't have the refresh repo action. This was not very convenient, since one had to first unselect the element and then trigger the context menu again, when the repo model was out of date. This commit fixes this minor annoyance.